Raybestos MC39451 Brake Master Cylinder
OE Quality 60-Day Returns
Raybestos
 Element3; New

Raybestos MC39451 Brake Master Cylinder

Brand Raybestos MC39451
Mounting Hole Quantity 2
Master Cylinder Material Iron
Mounting Hole Diameter 0.354
Bore Size 21.000
Number of Ports 2
Primary Port Thread A 3/8"-24
Secondary Port Thread A 3/8"-24
Product line Element3; New
Fits Chrysler, Dodge, and Plymouth · 122 vehicles

Iron construction. Provides durable brake master cylinder performance.

Dual-port design. Features two ports for straightforward hydraulic connections.

Element3 line. Raybestos brake hydraulics with a fresh product offering.

Cross-references Bosch 18068, Cardone New 13-1945 and Centric Parts 130.63032 for the same application. See all 45.

$86.16Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $86.16
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Brake Master Cylinder options

Raybestos MC39451 Brake Master Cylinder

The Raybestos Element3 New MC39451 brake master cylinder is built for Chrysler, Dodge, and Plymouth applications that use a 21.000 bore and dual-port hydraulic layout. It is a direct-fit brake hydraulics replacement for classic front-wheel-drive platforms including Dodge Aries, Dodge Daytona, and Plymouth Reliant.

Key Features

  • Iron master cylinder construction for durable brake hydraulic performance
  • 21.000 bore size for the listed vehicle applications
  • 2 mounting holes with 0.354 mounting hole diameter
  • 2 ports with 3/8"-24 primary and secondary port threads
  • Element3 New line coverage for select Chrysler, Dodge, and Plymouth models
  • Cross-reference: Dorman - First Stop M39451

Detailed Description

Raybestos MC39451 is a brake master cylinder engineered for vehicles in the Element3 New line, with fitment across 1983-1995 Chrysler, Dodge, and Plymouth models. This brake master cylinder uses an iron body, a 21.000 bore, and two 3/8"-24 ports to match the hydraulic requirements of the listed applications. It is a practical replacement for worn or leaking master cylinders on vehicles such as Dodge Shadow, Plymouth Sundance, and Chrysler LeBaron, and it also applies to several other compact and midsize front-drive platforms from the same era. This part number, MC39451, is also referenced by other aftermarket listings for the same application.

Vehicle Fitment

  • Fits 1991-1995 Plymouth Acclaim, N/A
  • Fits 1989 Plymouth Acclaim, N/A
  • Fits 1988-1994 Dodge Shadow, N/A
  • Fits 1987-1994 Plymouth Sundance, N/A
  • Fits 1987-1989 Chrysler LeBaron, N/A
  • Fits 1983-1985 Chrysler LeBaron, N/A
  • Fits 1983-1989 Dodge Aries, N/A
  • Fits 1987-1989 Dodge Lancer, N/A
  • Fits 1989 Dodge Spirit, N/A
  • Fits 1983-1989 Plymouth Reliant, N/A
  • Fits 1984-1988 Chrysler Daytona, N/A
  • Fits 1983-1988 Chrysler New Yorker, N/A
  • Fits 1987-1988 Chrysler Town & Country, N/A
  • Fits 1985 Chrysler Town & Country, N/A
  • Fits 1983-1988 Dodge 600, N/A
  • Fits 1984-1988 Dodge Daytona, N/A
  • Fits 1983-1987 Dodge Charger, N/A
  • Fits 1987 Dodge Shadow, N/A; not compatible with vehicles equipped with Performance Package
  • Fits 1983-1987 Plymouth Turismo, N/A
  • Fits 1984-1986 Chrysler Laser, N/A
  • Fits 1986 Dodge Lancer, N/A; bore 21mm; cast iron cylinder with plastic reservoir
  • Fits 1985 Dodge Lancer, N/A; bore 21mm
  • Fits 1983-1984 Dodge Rampage, N/A

Common Problems This Part Can Address

  • Brake pedal travel that feels excessive due to internal master cylinder wear
  • External brake fluid leakage at the master cylinder body or ports
  • Uneven hydraulic pressure affecting brake response
  • Soft or inconsistent pedal feel caused by a failing hydraulic seal
  • Brake warning concerns tied to master cylinder deterioration

Installation Notes and Tips

Confirm the bore size, port thread size, and mounting pattern before installation. This MC39451 uses two mounting holes and dual 3/8"-24 ports, so the brake lines must match the listed configuration. After installation, bleed the brake system thoroughly and verify pedal feel and fluid level before returning the vehicle to service.

Quality Assurance

Raybestos Element3 New brake hydraulics are cataloged for direct replacement use on the listed Chrysler, Dodge, and Plymouth applications. The MC39451 is specified with iron construction and application-matched hydraulic dimensions for consistent fitment on the vehicles shown above.

Related reading

This part fits 122 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodel# DoorsNotes
1995PlymouthAcclaim——Element3; New
1994DodgeShadow——Element3; New
1994PlymouthAcclaim——Element3; New
1994PlymouthSundance——Element3; New
1993DodgeShadow——Element3; New
1993PlymouthAcclaim——Element3; New
1993PlymouthSundance——Element3; New
1992DodgeShadow——Element3; New
1992PlymouthAcclaim——Element3; New
1992PlymouthSundance——Element3; New
1991DodgeShadow——Element3; New
1991PlymouthAcclaim——Element3; New
1991PlymouthSundance——Element3; New
1990DodgeOmni——Element3; New
1990DodgeShadow——Element3; New
1990PlymouthHorizon——Element3; New
1990PlymouthSundance——Element3; New
1989ChryslerLeBaron—4 DoorElement3; New
1989DodgeAries——Element3; New
1989DodgeLancer——Element3; New
1989DodgeOmni——Element3; New
1989DodgeShadow——Element3; New
1989DodgeSpirit——Element3; New
1989PlymouthAcclaim——Element3; New
1989PlymouthHorizon——Element3; New
1989PlymouthReliant——Element3; New
1989PlymouthSundance——Element3; New
1988ChryslerDaytona——Element3; New
1988ChryslerLeBaron——Element3; New
1988ChryslerNew Yorker——Element3; New
1988ChryslerTown & Country——Element3; New
1988Dodge600——Element3; New
1988DodgeAries——Element3; New
1988DodgeDaytona——Element3; New
1988DodgeLancerBase—Element3; New
1988DodgeLancerES—Element3; New
1988DodgeOmni——Element3; New
1988DodgeShadow——Element3; New
1988PlymouthCaravelle——Element3; New
1988PlymouthHorizon——Element3; New
1988PlymouthReliant——Element3; New
1988PlymouthSundanceBase—Element3; New
1988PlymouthSundanceRS—Element3; New
1987ChryslerDaytona——Element3; New
1987ChryslerLeBaron——Element3; New
1987ChryslerNew Yorker——Element3; New
1987ChryslerTown & Country——Element3; New
1987Dodge600——Element3; New
1987DodgeAries——Element3; New
1987DodgeChargerBase—Element3; New
1987DodgeDaytona——Element3; New
1987DodgeLancerBase—Element3; New
1987DodgeLancerES—Element3; New
1987DodgeOmni——Element3; New
1987DodgeShadow——Not compatible with vehicles equipped with Performance Package.; Element3; New
1987PlymouthCaravelle——Element3; New
1987PlymouthHorizon——Element3; New
1987PlymouthReliant——Element3; New
1987PlymouthSundance——Element3; New
1987PlymouthTurismo——Element3; New
1986ChryslerDaytona——Element3; New
1986ChryslerExecutive Limousine——Element3; New
1986ChryslerLaser——Element3; New
1986ChryslerNew Yorker——Element3; New
1986Dodge600——Element3; New
1986DodgeAries——Element3; New
1986DodgeCharger——Element3; New
1986DodgeDaytona——Element3; New
1986DodgeLancer——Bore 21mm; Cast Iron Cylinder With Plastic Reservoir; Element3; New
1986DodgeOmni——Element3; New
1986PlymouthCaravelle——Element3; New
1986PlymouthHorizonBase—Element3; New
1986PlymouthHorizonSE—Element3; New
1986PlymouthReliant——Element3; New
1986PlymouthTurismo——Element3; New
1985ChryslerDaytona——Element3; New
1985ChryslerExecutive Limousine——Element3; New
1985ChryslerLaser——Element3; New
1985ChryslerLeBaron——Element3; New
1985ChryslerNew Yorker——Element3; New
1985ChryslerTown & Country——Element3; New
1985Dodge600——Element3; New
1985DodgeAries——Element3; New
1985DodgeCharger——Element3; New
1985DodgeDaytona——Element3; New
1985DodgeLancer——Bore 21mm; Element3; New
1985DodgeOmni——Element3; New
1985PlymouthHorizonBase—Element3; New
1985PlymouthHorizonSE—Element3; New
1985PlymouthReliant——Element3; New
1985PlymouthTurismo——Element3; New
1984ChryslerDaytona——Element3; New
1984ChryslerE Class——Element3; New
1984ChryslerExecutive Sedan——Element3; New
1984ChryslerLaser——Element3; New
1984ChryslerLeBaron——Element3; New
1984ChryslerNew Yorker——Element3; New
1984Dodge600——Element3; New
1984DodgeAries——Element3; New
1984DodgeCharger——Element3; New
1984DodgeDaytona——Element3; New
1984DodgeOmni——Element3; New
1984DodgeRampage——Element3; New
1984PlymouthHorizonBase—Element3; New
1984PlymouthHorizonSE—Element3; New
1984PlymouthReliant——Element3; New
1984PlymouthTurismo——Element3; New
1983ChryslerE Class——Element3; New
1983ChryslerExecutive Sedan——Element3; New
1983ChryslerLeBaron——Element3; New
1983ChryslerNew Yorker——Element3; New
1983Dodge400——Element3; New
1983Dodge600——Element3; New
1983DodgeAries——Element3; New
1983DodgeCharger——Element3; New
1983DodgeOmni——Element3; New
1983DodgeRampage——Element3; New
1983PlymouthHorizonBase—Element3; New
1983PlymouthHorizonCustom—Element3; New
1983PlymouthReliant——Element3; New
1983PlymouthScamp——Element3; New
1983PlymouthTurismo——Element3; New
Directly replaces or cross-references 45 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — 18068Cardone New — 13-1945Centric Parts — 130.63032Centric Parts — 131.63032Dorman - First Stop — M39451EXEDY OEM — MC488Quality-Built — NM1945Remy — 1285510-194566-91-08083-32032728-326783-3203211945108134510270524076042713884271388042942684294268042948614294861042948624294862043427124342712045096024509602513945178739451CM1687CM1844E98286F108134M2496M53032M83032M83032EM83034MC108134MC1081342MCA39451R108134SMC98286